I want to convert my 1986 V12 from Relief Flow to a Full Flow Oil Cooler system.
It seems to me that it would be a sensible thing to do, especially as I live in Southern France with quite warm summers and a pressure gauge that never sees relief pressures once the car is warmed up…
I did a lot of research in the archives but there are some questions still unanswered:
What is the Oil Filter tread size ?
1"x12 or 3/4x16 UNF ?
What size are the Oil Hoses fittings to the Cooler ?
What size are the sealed Oil Hose fittings to the Filter assembly ?
One approach is to machine the existing filter housing as per Noel [Jags+30jugs] did, but I can’t find any precise details and don’t know if it’s possible with the tools I have available.
The other approach, and probably easier, is to purchase a Universal Oil Cooler Sandwich Plate, with the added bonus of a build in 80°Thermostat, that is installed between the Filter housing and the Oil Filter, route the relief oil pipe back to the sump and use the existing oil pipes and oil cooler for the full flow set up, as per Don Neff and as Kirbert suggests in numerous posts.
But there I am confused as to witch size I should get.
And an other point, the Parts Catalogue show two different Oil Coolers, CBC2692 for Full flow and C43923 for Relief flow.
I know it has been discussed before, but has anybody established what is the difference?
Any input would be highly appreciated.